Harnesses with straps connected to a cock ring droop uncomfortably and awkwardly when you bend over. It’s a simple fact of anatomy that certain harnesses are uncomfortable to bend over in - like the styles mentioned above. These also include harnesses that come down holster-style and connect to a cock ring. These include classic suspender harnesses and their million variations.
In other words: a harness that requires you to keep your pants on, at least a little bit (it’s OK if they sag and show that happy trail, that tuft of pubic hair, as they should).